unsafe_iface.go
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package reflect2
import (
"reflect"
"unsafe"
)
type iface struct {
itab *itab
data unsafe.Pointer
}
type itab struct {
ignore unsafe.Pointer
rtype unsafe.Pointer
}
func IFaceToEFace(ptr unsafe.Pointer) interface{} {
iface := (*iface)(ptr)
if iface.itab == nil {
return nil
}
return packEFace(iface.itab.rtype, iface.data)
}
type UnsafeIFaceType struct {
unsafeType
}
func newUnsafeIFaceType(cfg *frozenConfig, type1 reflect.Type) *UnsafeIFaceType {
return &UnsafeIFaceType{
unsafeType: *newUnsafeType(cfg, type1),
}
}
func (type2 *UnsafeIFaceType) Indirect(obj interface{}) interface{} {
objEFace := unpackEFace(obj)
assertType("Type.Indirect argument 1", type2.ptrRType, objEFace.rtype)
return type2.UnsafeIndirect(objEFace.data)
}
func (type2 *UnsafeIFaceType) UnsafeIndirect(ptr unsafe.Pointer) interface{} {
return IFaceToEFace(ptr)
}
func (type2 *UnsafeIFaceType) IsNil(obj interface{}) bool {
if obj == nil {
return true
}
objEFace := unpackEFace(obj)
assertType("Type.IsNil argument 1", type2.ptrRType, objEFace.rtype)
return type2.UnsafeIsNil(objEFace.data)
}
func (type2 *UnsafeIFaceType) UnsafeIsNil(ptr unsafe.Pointer) bool {
if ptr == nil {
return true
}
iface := (*iface)(ptr)
if iface.itab == nil {
return true
}
return false
}